Revert incorrect custom code for partial class sample gen (Azure#45898)

Author: ArthurMa1978

sdk/securityinsights/Azure.ResourceManager.SecurityInsights/api/Azure.ResourceManager.SecurityInsights.netstandard2.0.cs

@@ -6,7 +6,6 @@ public partial class OperationalInsightsWorkspaceSecurityInsightsResource : Azur
         protected OperationalInsightsWorkspaceSecurityInsightsResource() { }
         public virtual Azure.Response<Azure.ResourceManager.SecurityInsights.Models.ThreatIntelligenceCount> CountThreatIntelligence(Azure.ResourceManager.SecurityInsights.Models.ThreatIntelligenceType tiType, Azure.ResourceManager.SecurityInsights.Models.ThreatIntelligenceCountQuery query = null, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
         public virtual System.Threading.Tasks.Task<Azure.Response<Azure.ResourceManager.SecurityInsights.Models.ThreatIntelligenceCount>> CountThreatIntelligenceAsync(Azure.ResourceManager.SecurityInsights.Models.ThreatIntelligenceType tiType, Azure.ResourceManager.SecurityInsights.Models.ThreatIntelligenceCountQuery query = null, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
-        public static Azure.Core.ResourceIdentifier CreateResourceIdentifier(string subscriptionId, string resourceGroupName, string workspaceName) { throw null; }
         public virtual Azure.ResourceManager.SecurityInsights.SecurityInsightsMetadataCollection GetAllSecurityInsightsMetadata() { throw null; }
         public virtual Azure.Pageable<Azure.ResourceManager.SecurityInsights.Models.ThreatIntelligenceMetrics> GetAllThreatIntelligenceIndicatorMetrics(System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
         public virtual Azure.AsyncPageable<Azure.ResourceManager.SecurityInsights.Models.ThreatIntelligenceMetrics> GetAllThreatIntelligenceIndicatorMetricsAsync(System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }